One vertex per element, one color per generator, with an edge from x to x·s.
(3,9)(6,10)(11,15)(14,16)(17,18,23,20)(19,22,27,24)(21,25,29,28)(26,30,32,31)(33,34)(35,37)(36,44)(38,39)(40,42)(41,46)(43,47)(45,48)(1,2)(3,10)(4,12)(5,8)(6,9)(7,13)(11,14)(15,16)(21,29)(25,28)(26,32)(30,31)(34,39)(35,42)(41,44)(43,48) involution — undirected(1,2,5,8)(3,6,9,10)(4,7,13,12)(11,14,15,16)(17,19,23,27)(18,24,20,22)(21,26,29,32)(25,31,28,30)(33,35,38,42)(34,40,39,37)(36,43,46,48)(41,47,44,45)(1,2)(3,6)(4,7)(5,8)(9,10)(11,14)(12,13)(15,16)(17,20,23,18)(19,22,27,24)(21,28,29,25)(26,30,32,31)(33,36)(34,41)(35,43)(37,45)(38,46)(39,44)(40,47)(42,48)(1,3,5,9)(2,6,8,10)(4,11,13,15)(7,14,12,16)(17,21)(18,25)(19,26)(20,28)(22,30)(23,29)(24,31)(27,32)(33,34)(35,40)(36,41)(37,42)(38,39)(43,47)(44,46)(45,48)(1,4)(2,7)(3,11)(5,13)(6,14)(8,12)(9,15)(10,16)(17,22)(18,19)(20,27)(21,30)(23,24)(25,26)(28,32)(29,31)(33,37,38,40)(34,42,39,35)(36,45,46,47)(41,48,44,43)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.