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