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