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