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)(19,29)(20,25)(21,26)(22,37)(23,27)(24,31)(28,39)(30,46)(32,42)(33,41)(34,48)(35,45)(36,43)(38,44)(40,47) involution — undirected(1,2)(3,6)(4,8)(5,7)(9,10)(11,15)(12,14)(13,16)(17,19,23,20)(18,24,27,41)(21,34,36,47)(22,33,39,31)(25,37,29,28)(26,42,43,46)(30,38,32,35)(40,45,48,44)(1,3,5,11)(2,6,7,15)(4,13,14,10)(8,16,12,9)(17,20,23,19)(18,25,27,29)(21,32,36,30)(22,33,39,31)(24,37,41,28)(26,42,43,46)(34,35,47,38)(40,44,48,45)(17,21,23,36)(18,26,27,43)(19,30,20,32)(22,38,39,35)(24,40,41,48)(25,42,29,46)(28,45,37,44)(31,47,33,34)(2,7)(6,15)(8,12)(9,16)(18,27)(19,20)(26,43)(28,37)(30,32)(31,33)(34,47)(44,45) 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.