One vertex per element, one color per generator, with an edge from x to x·s.
(2,7)(3,11)(4,5)(9,10)(12,15)(13,14)(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(1,2,6,10)(3,12,14,15)(4,7,5,9)(8,13,16,11)(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)(1,3)(2,8)(4,13)(5,11)(6,14)(7,12)(9,15)(10,16)(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(1,4,6,5)(2,9,10,7)(3,13,14,11)(8,15,16,12)(18,26)(24,40)(25,43)(27,38)(28,41)(33,44)(39,46)(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.