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