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