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