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)(9,12)(11,15)(14,16)(17,18)(19,26)(20,25)(21,30)(22,24)(23,28)(27,32)(29,31)(33,34)(35,40)(36,39)(37,41)(38,42)(43,48)(44,47)(45,46) involution — undirected(1,2,6,3)(4,9,12,7)(5,8,13,10)(11,15,16,14)(17,19)(18,23)(20,27)(21,25)(22,28)(24,26)(29,30)(31,32)(33,35,38,36)(34,39,42,40)(37,43,46,44)(41,47,45,48)(2,3)(7,9)(8,10)(14,15)(18,24)(20,29)(23,26)(27,30)(33,35,38,36)(34,40,42,39)(37,43,46,44)(41,48,45,47)(1,3,6,2)(4,9,12,7)(5,10,13,8)(11,15,16,14)(17,20,22,29)(18,25,24,31)(19,27,28,30)(21,26,32,23)(33,36,38,35)(34,39,42,40)(37,44,46,43)(41,47,45,48)(1,4)(2,7)(3,9)(5,11)(6,12)(8,14)(10,15)(13,16)(17,19)(18,26)(20,27)(21,31)(22,28)(23,24)(25,32)(29,30)(33,34)(35,40)(36,39)(37,45)(38,42)(41,46)(43,47)(44,48) involution — undirected(1,5,6,13)(2,8,3,10)(4,11,12,16)(7,14,9,15)(17,21,22,32)(18,27,24,30)(19,25,28,31)(20,26,29,23)(33,37,38,46)(34,41,42,45)(35,43,36,44)(39,47,40,48)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.