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