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