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)(17,18,21,26,22,27,34,24)(19,23,30,38,29,37,44,35)(20,25,33,42,32,41,46,39)(28,36,43,48,31,40,45,47)(1,3,5,8)(2,6,4,7)(9,10)(11,15)(12,14)(13,16)(17,19)(18,23)(20,31)(21,30)(22,29)(24,35)(25,40)(26,38)(27,37)(28,32)(33,45)(34,44)(36,41)(39,48)(42,47)(43,46)(1,2,5,4)(3,6,8,7)(9,11)(10,13)(12,16)(14,15)(18,24)(21,34)(23,35)(25,39)(26,27)(30,44)(33,46)(36,47)(37,38)(40,48)(41,42)(43,45)(1,4,5,2)(3,6,8,7)(11,16)(13,15)(17,20)(18,25)(19,28)(21,33)(22,32)(23,36)(24,39)(26,42)(27,41)(29,31)(30,43)(34,46)(35,47)(37,40)(38,48)(44,45)(10,14)(13,15)(19,29)(20,32)(23,37)(25,41)(30,44)(33,46)(35,38)(39,42) 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.