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