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