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