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