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