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