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