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