One vertex per element, one color per generator, with an edge from x to x·s.
(3,9)(7,10)(11,15)(14,16)(17,18)(19,24)(20,26)(21,30)(22,32)(23,28)(25,31)(27,29)(33,34)(35,37)(36,44)(38,42)(39,41)(40,46)(43,47)(45,48) involution — undirected(1,2)(3,10)(4,12)(5,6)(7,9)(8,13)(11,14)(15,16)(17,19,23,30)(18,24,28,21)(20,22,31,29)(25,27,26,32)(33,34,38,42)(35,37,41,39)(36,40,46,44)(43,45,48,47)(2,6)(7,10)(8,12)(14,16)(17,20,23,31)(18,25,28,26)(19,29,30,22)(21,27,24,32)(33,35,38,41)(34,39,42,37)(36,43,46,48)(40,47,44,45)(1,2)(3,7)(4,8)(5,6)(9,10)(11,14)(12,13)(15,16)(17,20)(18,26)(19,22)(21,27)(23,31)(24,32)(25,28)(29,30)(33,36)(34,40)(35,43)(37,45)(38,46)(39,47)(41,48)(42,44) involution — undirected(1,3)(2,7)(4,11)(5,9)(6,10)(8,14)(12,16)(13,15)(17,21)(18,19)(20,27)(22,26)(23,24)(25,29)(28,30)(31,32)(33,34)(35,39)(36,40)(37,41)(38,42)(43,47)(44,46)(45,48) involution — undirected(1,4)(2,8)(3,11)(5,13)(6,12)(7,14)(9,15)(10,16)(17,22)(18,27)(19,20)(21,26)(23,29)(24,25)(28,32)(30,31)(33,37,38,39)(34,41,42,35)(36,45,46,47)(40,48,44,43)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.