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