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