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