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