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