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