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