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