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