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