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