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