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