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