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