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