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