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