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)(12,14)(13,16)(17,18,22,24)(19,28,29,45)(20,33,36,26)(21,27,23,38)(25,31,39,32)(30,46,34,44)(35,43,37,42)(40,47,41,48)(2,5)(3,7)(9,11,12,16)(10,13,14,15)(18,24)(19,29)(26,33)(27,38)(30,34)(31,32)(42,43)(47,48)(11,16)(13,15)(17,19,21,31,22,29,23,32)(18,25,38,45,24,39,27,28)(20,34,37,47,36,30,35,48)(26,41,42,44,33,40,43,46)(2,5)(6,8)(10,14)(13,15)(17,20)(18,26)(19,30)(21,37)(22,36)(23,35)(24,33)(25,40)(27,43)(28,44)(29,34)(31,48)(32,47)(38,42)(39,41)(45,46) involution — undirected(1,3,4,7)(2,6,5,8)(17,21,22,23)(18,27,24,38)(19,31,29,32)(20,35,36,37)(25,28,39,45)(26,42,33,43)(30,47,34,48)(40,46,41,44)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.