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