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