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