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