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