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