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