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