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