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