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