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