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