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