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