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