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