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