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