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