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