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